A dad who has been seeking justice for his son's brutal murder for 24 years has revealed the shocking email he received about his son's killers. Mark Corley, 23, was "executed by a brutal shooting" and his body was found on farmland on 13 December 2000 - five months after he went missing. Despite five suspects being charged nobody has ever been convicted after police were involved in a "bugging" operation.

His dad Tony Corley, 70, has spent over two decades seeking justice - much of that time in Grimsby - and put up a £20,000 reward for anybody who gives evidence leading to a conviction. READ MORE: 'I will never give up seeking justice for the murder of my son' Keep up to date with all the latest breaking news and top stories from Grimsby with our free newsletter And 24 years - this month - since his son disappeared he has revealed the last shred of new evidence to emerge, for the first time. Tony, a divorced former builder says he received a mysterious email from someone who said he knew the killers.

But it said they needed time to decide if they wanted to tell all. Heartbroken Tony, who moved the Grimsby in 2001 and lived here for many years during his search for justice, is hanging on to hope that one day they will change their mind. Speaking about it for the first time, Tony said: “A long time after the reward was offered I had an email from someone saying they used to know the perpetrators but had changed their ways.

They said they needed time to decide if they wanted.